/* ===========================================================
   Merged base CSS — T10.
   Design tokens + resets are de-duped from the two legacy apps
   (karteikasten-legacy.html, course-legacy.html); component rules
   below are carried over verbatim, grouped by source app, so later
   tasks (T11-13 dashboard/lektion/pruefungen views) have every
   class they need available. Where both apps defined the same
   selector differently (.wrap, .btn), both are kept in source
   order — later view work should reconcile/rename as needed.
   =========================================================== */

:root{
  --paper:#FBFAF6; --card:#FFFFFF; --ink:#16150F; --yellow:#FFD500; --yellow-soft:#FFF3B8;
  --green:#2E7D4F; --green-soft:#E7F3EC; --red:#C0392B; --red-soft:#FAE9E6;
  --gray:#75746C; --line:#E4E2D8; --radius:10px; --shadow:0 2px 0 var(--line);
}
[data-theme="dark"]{
  --paper:#121210; --card:#1D1D1A; --ink:#F2F1EA; --yellow:#FFD500; --yellow-soft:#4A3F00;
  --green:#5FBF87; --green-soft:#17301F; --red:#F1786B; --red-soft:#331A17;
  --gray:#96958C; --line:#33322C; --shadow:0 2px 0 #000;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{background:var(--paper);color:var(--ink);font-family:'Archivo',system-ui,-apple-system,sans-serif;min-height:100%;transition:background .2s}
body{font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
b{font-weight:800}
i{font-style:italic}
:focus-visible{outline:3px solid var(--yellow);outline-offset:2px}

/* ---------- shell (T10: nav + #view mount) ---------- */
.topnav{border-bottom:3px solid var(--ink);background:var(--paper)}
.topnav-inner{max-width:820px;margin:0 auto;padding:14px 16px;display:flex;flex-wrap:wrap;align-items:center;gap:8px 18px}
.topnav-brand{font-weight:900;font-stretch:78%;letter-spacing:-.4px;font-size:16px;margin-right:auto}
.topnav-link{font-family:'Spline Sans Mono',monospace;font-size:12px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--gray);padding:6px 10px;border-radius:8px;text-decoration:none}
.topnav-link:hover{color:var(--ink);background:var(--yellow-soft)}

/* The widget always gets its own full-width row below brand+links —
   .topnav-inner is fixed at 820px, so squeezing it into the first row
   forces the email input to shrink below a usable width at any viewport. */
.auth-widget{flex:1 1 100%;display:flex;justify-content:flex-end}
.auth-widget-form{display:flex;flex-wrap:wrap;gap:8px;align-items:center;max-width:100%}
.auth-widget-input{font-family:'Spline Sans Mono',monospace;font-size:13px;padding:8px 12px;border:2px solid var(--ink);border-radius:7px;background:var(--paper);width:220px;max-width:100%}
.auth-widget-input:focus{outline:3px solid var(--yellow)}
.auth-widget-btn{padding:8px 14px;font-size:13px;white-space:nowrap;flex-shrink:0}
.auth-widget-status{font-size:12.5px;font-weight:600;color:var(--gray);display:flex;flex-wrap:wrap;align-items:center;gap:4px}
.auth-widget-email{color:var(--ink);font-weight:700}
.auth-widget-signout{font-size:12.5px;font-weight:700;color:var(--ink);text-decoration:underline;background:none;border:none;padding:0;cursor:pointer}
.auth-widget-confirm{font-size:12.5px;color:var(--gray)}
.auth-widget-confirm-prompt{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12.5px}

/* ===========================================================
   karteikasten-legacy.html — flashcard app
   =========================================================== */
.wrap{max-width:760px;margin:0 auto;padding:18px 16px calc(40px + env(safe-area-inset-bottom))}

/* ---------- masthead ---------- */
.mast{display:flex;align-items:baseline;gap:12px;padding-bottom:14px;border-bottom:3px solid var(--ink);margin-bottom:20px;flex-wrap:wrap}
.mast h1{font-size:26px;font-weight:900;font-stretch:78%;letter-spacing:-.4px;line-height:1}
.mast .sub{font-family:'Spline Sans Mono',monospace;font-size:11px;color:var(--gray);letter-spacing:.06em;text-transform:uppercase}
.mast .spacer{flex:1}
.icon-btn{width:32px;height:32px;border-radius:8px;border:2px solid var(--line);display:grid;place-items:center;font-size:14px}
.icon-btn:hover{border-color:var(--ink)}

/* ---------- SIGNATURE: the box rail ---------- */
.rail{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;margin-bottom:6px}
.bx{position:relative;border:2px solid var(--line);border-radius:6px;background:var(--card);padding:8px 4px 6px;text-align:center;overflow:hidden;min-height:78px;display:flex;flex-direction:column;justify-content:flex-end;transition:border-color .15s}
/* full-height block scaled from the bottom — animates on the compositor, not layout */
.bx .fill{position:absolute;left:0;right:0;bottom:0;height:100%;transform-origin:bottom;background:var(--yellow-soft);transition:transform .5s cubic-bezier(.2,.8,.2,1);z-index:0}
.bx.b5 .fill{background:var(--green-soft)}
.bx .lbl,.bx .n{position:relative;z-index:1}
.bx .lbl{font-family:'Spline Sans Mono',monospace;font-size:9px;color:var(--gray);letter-spacing:.05em;text-transform:uppercase;margin-bottom:2px}
.bx .n{font-size:22px;font-weight:900;font-stretch:70%;line-height:1}
.bx .iv{position:relative;z-index:1;font-family:'Spline Sans Mono',monospace;font-size:9px;color:var(--gray);margin-top:1px}
.bx.hot{border-color:var(--ink)}
.rail-cap{font-family:'Spline Sans Mono',monospace;font-size:10px;color:var(--gray);text-align:center;margin-bottom:22px;letter-spacing:.04em}

/* ---------- panels ---------- */
.panel{background:var(--card);border:2px solid var(--line);border-radius:var(--radius);padding:16px;margin-bottom:16px}
.panel h2{font-size:12px;font-weight:800;font-stretch:82%;letter-spacing:.1em;text-transform:uppercase;color:var(--gray);margin-bottom:12px}
.chips{display:flex;flex-wrap:wrap;gap:7px}
.chip{border:2px solid var(--line);border-radius:20px;padding:5px 12px;font-size:13px;font-weight:700;display:flex;align-items:center;gap:6px;transition:all .12s}
.chip:hover{border-color:var(--ink)}
.chip .ct{font-family:'Spline Sans Mono',monospace;font-size:10px;color:var(--gray);font-weight:400}
.chip.on{background:var(--yellow);border-color:var(--ink);color:#16150F}
.chip.on .ct{color:#16150F;opacity:.65}
.chip.due::after{content:'';width:6px;height:6px;border-radius:50%;background:var(--red)}
.row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.mini{font-size:12px;color:var(--gray);margin-top:10px;line-height:1.45}

/* ---------- buttons (karteikasten variant) ---------- */
.btn{border:2px solid var(--ink);border-radius:8px;padding:11px 18px;font-weight:800;font-size:15px;font-stretch:88%;background:var(--card);box-shadow:var(--shadow);transition:transform .06s}
.btn:active{transform:translateY(2px);box-shadow:none}
.btn.go{background:var(--yellow);color:#16150F;width:100%;font-size:17px;padding:14px}
.btn.go[disabled]{opacity:.4;cursor:not-allowed;background:var(--card)}
.btn.ghost{border-color:var(--line);font-weight:700;font-size:13px;padding:7px 12px;box-shadow:none}
.btn.ghost:hover{border-color:var(--ink)}

/* ---------- study ---------- */
.study-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;font-family:'Spline Sans Mono',monospace;font-size:11px;color:var(--gray);letter-spacing:.04em}
.bar{height:4px;background:var(--line);border-radius:2px;overflow:hidden;margin-bottom:18px}
.bar>span{display:block;width:100%;height:100%;transform-origin:left;background:var(--yellow);transition:transform .3s}
.fc{background:var(--card);border:2px solid var(--ink);border-radius:14px;box-shadow:0 4px 0 var(--line);padding:26px 22px;min-height:230px;display:flex;flex-direction:column;justify-content:center;text-align:center;cursor:pointer;position:relative}
.fc .tag{position:absolute;top:12px;left:14px;font-family:'Spline Sans Mono',monospace;font-size:10px;color:var(--gray);letter-spacing:.06em;text-transform:uppercase}
.fc .bxtag{position:absolute;top:12px;right:14px;font-family:'Spline Sans Mono',monospace;font-size:10px;color:var(--gray);letter-spacing:.06em}
.fc .q{font-size:21px;font-weight:800;font-stretch:88%;line-height:1.35}
.fc .hr{height:2px;background:var(--line);margin:20px auto;width:44px;border-radius:2px}
.fc .a{font-size:19px;line-height:1.5;font-weight:400}
.fc .a b{font-weight:900;background:var(--yellow-soft);padding:0 3px;border-radius:3px}
.fc .hint{position:absolute;bottom:12px;left:0;right:0;font-family:'Spline Sans Mono',monospace;font-size:10px;color:var(--gray);letter-spacing:.06em}
.grade{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:16px}
.g-btn{border:2px solid var(--ink);border-radius:10px;padding:14px;font-weight:800;font-size:15px;box-shadow:var(--shadow);transition:transform .06s}
.g-btn:active{transform:translateY(2px);box-shadow:none}
.g-btn small{display:block;font-family:'Spline Sans Mono',monospace;font-size:9px;font-weight:400;opacity:.6;margin-top:2px;letter-spacing:.04em}
.g-no{background:var(--red-soft);color:var(--red);border-color:var(--red)}
.g-yes{background:var(--green-soft);color:var(--green);border-color:var(--green)}

/* ---------- ask the tutor ---------- */
.ask{margin-top:16px;border:2px solid var(--line);border-radius:var(--radius);background:var(--card);padding:14px}
.ask h3{font-family:'Spline Sans Mono',monospace;font-size:10px;font-weight:400;color:var(--gray);letter-spacing:.08em;text-transform:uppercase;margin-bottom:10px}
.asklog{display:flex;flex-direction:column;gap:10px;margin-bottom:12px}
.asklog:empty{margin-bottom:0}
.msg{font-size:14px;line-height:1.55;border-radius:8px;padding:9px 11px;max-width:92%}
.msg.you{align-self:flex-end;background:var(--yellow-soft);border:1px solid var(--line);font-weight:600}
.msg.bot{align-self:flex-start;background:var(--paper);border:1px solid var(--line)}
.msg.err{align-self:stretch;max-width:100%;background:var(--red-soft);border:1px solid var(--red);color:var(--red);font-size:13px}
.msg b{font-weight:800}
.msg .de{font-family:'Spline Sans Mono',monospace;font-size:13px;background:var(--yellow-soft);padding:0 3px;border-radius:3px}
.msg p{margin:0 0 6px}
.msg p:last-child{margin:0}
.msg ul{margin:4px 0 4px 16px}
.dots{display:inline-block;font-family:'Spline Sans Mono',monospace;color:var(--gray);font-size:13px}
.dots::after{content:"·";animation:blink 1.2s steps(4,end) infinite}
@keyframes blink{0%{content:"·"}33%{content:"··"}66%{content:"···"}}
.askform{display:flex;gap:8px}
.askform input{flex:1;min-width:0;font-family:inherit;font-size:14px;color:var(--ink);background:var(--paper);border:2px solid var(--line);border-radius:8px;padding:10px 11px}
.askform input:focus{outline:none;border-color:var(--ink)}
.askform button{border:2px solid var(--ink);border-radius:8px;padding:0 15px;font-weight:800;font-size:14px;background:var(--yellow);color:#16150F;box-shadow:var(--shadow);transition:transform .06s;white-space:nowrap}
.askform button:active{transform:translateY(2px);box-shadow:none}
.askform button[disabled]{opacity:.4;cursor:not-allowed}
.sugg{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:10px}
.sugg button{border:1.5px solid var(--line);border-radius:99px;padding:5px 10px;font-size:12px;font-weight:600;color:var(--gray);background:var(--paper);transition:border-color .15s,color .15s}
.sugg button:hover{border-color:var(--ink);color:var(--ink)}
.sugg button[disabled]{opacity:.4;cursor:not-allowed}
.sugg button[disabled]:hover{border-color:var(--line);color:var(--gray)}
.keyrow{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-family:'Spline Sans Mono',monospace;font-size:10px;color:var(--gray);letter-spacing:.05em;margin-top:10px}
.keyrow button{text-decoration:underline;font-size:10px;color:var(--gray);font-family:inherit}
.keyrow button:hover{color:var(--ink)}

/* ---------- done ---------- */
.done{text-align:center;padding:34px 16px}
.done .big{font-size:44px;font-weight:900;font-stretch:70%;line-height:1}
.done p{color:var(--gray);margin:8px 0 20px;font-size:14px}
.tally{display:flex;justify-content:center;gap:26px;margin:18px 0 24px}
.tally div{font-family:'Spline Sans Mono',monospace;font-size:11px;color:var(--gray);letter-spacing:.05em}
.tally strong{display:block;font-family:'Archivo';font-size:26px;font-weight:900;font-stretch:70%;color:var(--ink);letter-spacing:0}

.note{font-size:12px;color:var(--ink);background:var(--yellow-soft);border-radius:var(--radius);padding:10px 12px;margin-bottom:16px;line-height:1.5}
.hide{display:none !important}

/* ===========================================================
   course-legacy.html — lessons/exams app
   =========================================================== */
.tab,.ch-tab{color:#16150F}
.btn.yellow{color:#16150F}
.summary-hero{background:#16150F;color:#FBFAF6}
.chapter-card.locked .ch-tab{color:var(--gray)}
[data-theme="dark"] input.answer{background:var(--card)}
[data-theme="dark"] .choice{background:var(--card)}
.themebtn{background:none;border:2px solid var(--ink);width:38px;height:38px;border-radius:99px;font-size:16px;display:flex;align-items:center;justify-content:center;color:var(--ink)}
.themebtn:hover{background:var(--yellow-soft)}

/* exams */
.exam-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(88px,1fr));gap:10px;margin-top:14px}
.exam-card{background:var(--card);border:2px solid var(--line);border-radius:10px;padding:10px 6px;cursor:pointer;text-align:center;transition:border-color .1s}
.exam-card:hover{border-color:var(--ink)}
.exam-card.passed{border-color:var(--green);background:var(--green-soft)}
.exam-no{font-weight:900;font-stretch:75%;font-size:22px}
.exam-best{font-size:12px;color:var(--gray);font-weight:700;margin-top:2px}

/* ---------- header (course masthead variant) ---------- */
.masthead{display:flex;align-items:center;gap:14px;padding:10px 0 22px;border-bottom:3px solid var(--ink);margin-bottom:26px}
.tab{background:var(--yellow);width:52px;height:52px;display:flex;align-items:center;justify-content:center;
  font-weight:900;font-size:26px;font-stretch:75%;border:3px solid var(--ink);flex-shrink:0}
.masthead h1{font-weight:900;font-stretch:80%;font-size:24px;letter-spacing:-.01em;line-height:1.1}
.masthead .sub{color:var(--gray);font-size:13px;font-weight:500;letter-spacing:.06em;text-transform:uppercase}
.masthead .spacer{flex:1}
.homebtn{background:none;border:2px solid var(--ink);padding:8px 14px;font-weight:700;font-size:13px;border-radius:6px}
.homebtn:hover{background:var(--ink);color:var(--paper)}

/* ---------- dashboard ---------- */
.eyebrow{font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--gray);margin-bottom:8px}
.chapter-card{background:var(--card);border:2px solid var(--ink);border-radius:var(--radius);padding:0;margin-bottom:14px;display:flex}
.chapter-card.locked{border-color:var(--line);color:var(--gray)}
/* Left corners rounded to match the card (radius minus the 2px border
   it sits inside) instead of relying on .chapter-card's overflow:hidden
   to clip the square tab — that clipping also ate the hover-translate
   tooltip (position:absolute, escapes upward) on any word in the card. */
.ch-tab{width:64px;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-weight:900;font-size:28px;font-stretch:75%;background:var(--yellow);border-right:2px solid var(--ink);border-top-left-radius:calc(var(--radius) - 2px);border-bottom-left-radius:calc(var(--radius) - 2px)}
.chapter-card.locked .ch-tab{background:var(--paper);border-right-color:var(--line)}
.ch-body{padding:16px 18px;flex:1}
.ch-body h3{font-weight:800;font-size:18px;font-stretch:90%}
.ch-body p{color:var(--gray);font-size:13.5px;margin-top:2px}
.ch-actions{margin-top:12px;display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.btn{background:var(--ink);color:var(--paper);border:2px solid var(--ink);padding:10px 18px;font-weight:700;font-size:14px;border-radius:7px;transition:transform .08s}
.btn:hover{transform:translateY(-1px)}
.btn.secondary{background:transparent;color:var(--ink)}
.btn.yellow{background:var(--yellow);color:var(--ink)}
.btn:disabled{opacity:.4;cursor:default;transform:none}
.pill{font-size:12px;font-weight:700;padding:4px 10px;border-radius:99px;border:1.5px solid var(--line);color:var(--gray)}
.pill.done{background:var(--green-soft);border-color:var(--green);color:var(--green)}
.progressbar{height:8px;background:var(--paper);border:1.5px solid var(--line);border-radius:99px;overflow:hidden;margin-top:10px}
.progressbar>div{height:100%;background:var(--yellow);border-right:1.5px solid var(--ink);transition:width .3s}

/* ---------- dashboard grid (T11) ----------
   New, namespaced .dash-* classes only — everything else here
   (.chapter-card/.ch-tab/.ch-body/.pill/.btn/.progressbar above) is
   reused as-is from course-legacy's dashboard, which already wins the
   .wrap/.btn cascade collision flagged in T10; no renaming needed for
   those. .dash-grid/.dash-pill/.dash-due/.dash-card/.dash-btn exist
   only for the layout/emphasis this view adds on top. */
.dash-grid{display:flex;flex-direction:column}
@media(min-width:720px){
  .dash-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
  .dash-grid .dash-card{margin-bottom:0}
}
.dash-pill.dash-due{background:var(--red-soft);border-color:var(--red);color:var(--red)}

.stats-panel{background:var(--card);border:2px solid var(--line);border-radius:var(--radius);padding:18px;margin-top:26px}
.stats-panel h3{font-weight:800;font-size:15px;margin-bottom:12px;font-stretch:90%}
.topic-row{display:flex;align-items:center;gap:10px;margin-bottom:8px;font-size:13.5px}
.topic-row .tname{width:150px;flex-shrink:0;font-weight:600}
.topic-row .tbar{flex:1;height:8px;background:var(--paper);border:1px solid var(--line);border-radius:99px;overflow:hidden}
.topic-row .tbar>div{height:100%}
.topic-row .tpct{width:70px;text-align:right;color:var(--gray);font-size:12.5px}
.stats-empty{color:var(--gray);font-size:13.5px}

/* ---------- lesson ---------- */
.phase-strip{display:flex;gap:8px;margin-bottom:20px;font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase}
.phase-strip span{padding:6px 12px;border-radius:99px;border:1.5px solid var(--line);color:var(--gray)}
.phase-strip span.active{background:var(--ink);color:var(--yellow);border-color:var(--ink)}
.lesson-card{background:var(--card);border:2px solid var(--ink);border-radius:var(--radius);padding:26px 26px 22px;margin-bottom:16px}
.lesson-card h2{font-weight:900;font-stretch:80%;font-size:26px;margin-bottom:14px;line-height:1.15}
.lesson-card h4{font-weight:800;font-size:15px;margin:18px 0 6px}
.lesson-card p{margin-bottom:10px;font-size:15.5px}
.lesson-card ul{margin:0 0 12px 20px}
.lesson-card li{margin-bottom:5px;font-size:15.5px}
.de{font-family:'Spline Sans Mono',monospace;font-weight:600;background:var(--yellow-soft);padding:1px 5px;border-radius:4px;white-space:nowrap}
.tip{background:var(--yellow-soft);border-left:4px solid var(--yellow);padding:10px 14px;border-radius:0 8px 8px 0;font-size:14px;margin:14px 0}
.tip b{font-weight:800}
table.conj{border-collapse:collapse;margin:10px 0 16px;font-size:15px;width:100%;max-width:430px}
table.conj th,table.conj td{border:1.5px solid var(--line);padding:7px 12px;text-align:left}
table.conj th{background:var(--paper);font-weight:800;font-size:12.5px;text-transform:uppercase;letter-spacing:.06em}
table.conj td:first-child{font-weight:600;color:var(--gray);width:90px}
table.conj td:nth-child(n+2){font-family:'Spline Sans Mono',monospace;font-weight:600}
.lesson-nav{display:flex;align-items:center;gap:12px;margin-top:8px}
.lesson-nav .count{color:var(--gray);font-size:13.5px;font-weight:600;flex:1;text-align:center}
.section-dots{display:flex;gap:6px;justify-content:center;margin-bottom:16px}
.section-dots i{width:10px;height:10px;border-radius:99px;border:1.5px solid var(--ink);display:block}
.section-dots i.on{background:var(--yellow)}
.section-dots i.past{background:var(--ink)}

/* ---------- practice ---------- */
.q-card{background:var(--card);border:2px solid var(--ink);border-radius:var(--radius);padding:26px;margin-bottom:16px}
.q-meta{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px;font-size:12.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--gray)}
.q-topic{background:var(--paper);border:1.5px solid var(--line);padding:3px 10px;border-radius:99px}
.q-text{font-size:19px;font-weight:700;line-height:1.4;margin-bottom:18px}
.q-text .blank{display:inline-block;min-width:70px;border-bottom:3px solid var(--yellow);height:1em;vertical-align:baseline}
.choices{display:flex;flex-direction:column;gap:9px}
.choice{background:var(--paper);border:2px solid var(--line);border-radius:8px;padding:12px 16px;font-size:15.5px;font-weight:600;text-align:left;transition:border-color .1s}
.choice:hover{border-color:var(--ink)}
.choice.selected{border-color:var(--ink);background:var(--yellow-soft)}
.choice.right{border-color:var(--green);background:var(--green-soft)}
.choice.wrong{border-color:var(--red);background:var(--red-soft)}
.answer-row{display:flex;gap:10px;flex-wrap:wrap}
input.answer{flex:1;min-width:200px;font-family:'Spline Sans Mono',monospace;font-size:16px;font-weight:600;padding:12px 14px;border:2px solid var(--ink);border-radius:8px;background:var(--paper)}
input.answer:focus{outline:3px solid var(--yellow)}
.umlauts{display:flex;gap:6px;margin-top:10px}
.umlauts button{width:38px;height:34px;border:1.5px solid var(--line);background:var(--card);border-radius:6px;font-size:15px;font-weight:600;font-family:'Spline Sans Mono',monospace}
.umlauts button:hover{border-color:var(--ink);background:var(--yellow-soft)}
/* matching */
.match-grid{display:flex;flex-direction:column;gap:9px}
.match-row{display:flex;align-items:center;gap:12px}
.match-left{font-family:'Spline Sans Mono',monospace;font-weight:600;font-size:15px;width:130px;flex-shrink:0;background:var(--yellow-soft);padding:9px 12px;border-radius:7px;text-align:center}
select.match-sel{flex:1;font-family:inherit;font-size:15px;font-weight:600;padding:10px 12px;border:2px solid var(--line);border-radius:7px;background:var(--card)}
select.match-sel.right{border-color:var(--green);background:var(--green-soft)}
select.match-sel.wrong{border-color:var(--red);background:var(--red-soft)}
.feedback{margin-top:16px;border-radius:8px;padding:14px 16px;font-size:14.5px;display:none;border:2px solid}
.feedback.show{display:block}
.feedback.good{background:var(--green-soft);border-color:var(--green)}
.feedback.bad{background:var(--red-soft);border-color:var(--red)}
.feedback .verdict{font-weight:900;font-stretch:85%;text-transform:uppercase;letter-spacing:.06em;font-size:13px;margin-bottom:5px}
.feedback.good .verdict{color:var(--green)}
.feedback.bad .verdict{color:var(--red)}
.grading{margin-top:16px;color:var(--gray);font-size:14px;font-weight:600;display:none;align-items:center;gap:8px}
.grading.show{display:flex}
.spin{width:16px;height:16px;border:2.5px solid var(--line);border-top-color:var(--ink);border-radius:99px;animation:sp .7s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}
.q-actions{display:flex;gap:10px;margin-top:18px;align-items:center}
.q-progress{flex:1;text-align:right;color:var(--gray);font-size:13px;font-weight:600}

/* ---------- summary ---------- */
.summary-hero{background:var(--ink);color:var(--paper);border-radius:var(--radius);padding:30px;text-align:center;margin-bottom:18px}
.summary-hero .big{font-weight:900;font-stretch:75%;font-size:52px;color:var(--yellow);line-height:1}
.summary-hero p{margin-top:8px;font-size:15px;color:#CFCEC6}

/* ---------- hover-to-translate ---------- */
/* Dictionary-based (src/translate.js), offline German→English tooltip on
   any wrapped word/phrase. Dotted underline is the hover cue; the
   translation itself is rendered via ::after/attr(data-en) so no extra
   markup or JS positioning is needed. Works identically inside .de spans
   (lesson prose), .fc .q (flashcard fronts) and .q-text (exercise/exam
   prompts). */
.tr{border-bottom:1.5px dotted var(--gray);cursor:help;position:relative}
.tr:hover,.tr:focus-visible{border-bottom-color:var(--ink)}
.tr:hover::after,.tr:focus-visible::after{
  content:attr(data-en);
  position:absolute;
  left:50%;
  bottom:calc(100% + 8px);
  transform:translateX(-50%);
  background:var(--ink);
  color:var(--paper);
  font-family:'Spline Sans Mono',monospace;
  font-size:12px;
  font-weight:600;
  line-height:1.35;
  white-space:normal;
  width:max-content;
  max-width:min(260px,80vw);
  padding:7px 10px;
  border-radius:6px;
  box-shadow:0 2px 6px rgba(0,0,0,.25);
  z-index:20;
  pointer-events:none;
}
/* Small-arrow cue pointing at the word below the bubble. */
.tr:hover::before,.tr:focus-visible::before{
  content:'';
  position:absolute;
  left:50%;
  bottom:calc(100% + 3px);
  transform:translateX(-50%);
  border:5px solid transparent;
  border-top-color:var(--ink);
  z-index:20;
  pointer-events:none;
}
[data-theme="dark"] .tr:hover::after,[data-theme="dark"] .tr:focus-visible::after{
  background:var(--yellow-soft);
  color:#16150F;
}
[data-theme="dark"] .tr:hover::before,[data-theme="dark"] .tr:focus-visible::before{
  border-top-color:var(--yellow-soft);
}

/* ---------- responsive ---------- */
@media (max-width:480px){
  .mast h1{font-size:21px}
  .fc .q{font-size:19px} .fc .a{font-size:17px}
  .bx{min-height:70px} .bx .n{font-size:19px}
}
@media(max-width:560px){
  .wrap{padding:14px 12px 60px}
  .lesson-card,.q-card{padding:18px 16px}
  .q-text{font-size:17px}
  .topic-row .tname{width:110px}
}
@media (prefers-reduced-motion:reduce){*{transition:none !important;animation:none !important}}